Which of the following is made of matter?

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?